Blender Git Loki

Fix some mesh edition macro operators incorrectly setting an empty description string.

No operator or macro should be missing description. But if they do, then
they should use NULL pointer, and not an empty string.

This behavior was already enforced (through an assert) for operators,
previous commit made it the same for macros.

Object update: Remove fallback from batch_cache_deform_tag

Falback is not really necessary, and causes
`BKE_object_data_batch_cache_dirty_tag` to run multithreaded in an
unsafe way.

No functional changes.

Compositor: Full frame Mix node

Adds full frame implementation to this node operations.
No functional changes.
2.3x faster than tiled fallback on average.

Reviewed By: jbakker

Differential Revision: https://developer.blender.org/D11686

Compositor: Export operation results as debug option

When fixing issues, seeing operation results can be helpful for
detecting which operation went wrong.

This commit adds an option for exporting all operations results to
image files.
Exceptions are:
- Output operations: They are already exported or can be seen in UI.
- Constant operations: There are too many and is rarely useful.

They are exported to "<temp session folder>/COM_operations/"
with filenames "<operation class name>_<operation id>.png".
Only works on full frame execution mode.

Reviewed By: jbakker

Differential Revision: https://developer.blender.org/D11722

Cleanup: Make curve trim node code more semantically correct

The code used `Spline::LookupResult` in a way that referred to evaluated
points and control points interchangeably. That didn't affect the logic,
but the code became harder to read. Instead, introduce a local struct
to contain the data in a more obvious way.

Cleanup: Remove unused function, unused declaration

Fix: memcpy overlapping region ASAN warning in curve trim node

Fix T89929: Crash when hiding in the render a previously keyframed volume

Regression introduced in {rBbfa3dc91b754}.

`ID_RECALC_GEOMETRY` should tag all operations of the `GEOMETRY`
component and not just the operation of node `GEOMETRY_EVAL_INIT`.

Cleanup: remove unused MTex.pmapto, pmaptoneg & defines

These have not been in use since 2.57
fafbd9d71b95776d1c7583476de74fccefab7f10.

Compositor: Full frame Double Edge Mask node

Adds full frame implementation to this node operation.
No functional changes.
No performances changes.

Reviewed By: jbakker

Differential Revision: https://developer.blender.org/D11750

VSE: Fix multicam splitting all selected strips

`split_multicam` used split operator, where if more strips than
multicam were selected, all would be split, which is undesirable.

Add `Sequence.split()` RNA API function. to split individual strips.
Function accepts `frame` and `split_method arguments`. Returns right
strip after splitting.

In case when strip being split have effects, these will be split too, so
no invalid state should be created.

Selection is not handled, this is by design up to user.

Reviewed By: sergey

Differential Revision: https://developer.blender.org/D11926

Versioning: fix vertex group name loss in linked duplicates.

After rB3b6ee8cee708 by @HooglyBoogly vertex groups were moved
to mesh data, and versioning code was provided to upgrade old
files. However, it fails to consider the case of linked duplicates
having different name lists, and dependent on the object order
can cause some of the names to be lost. This can even be all of
them, if there is a duplicate without any names, which can be
easily created by lazy Python code.

To fix this, change the code to use the longest available name list.

Differential Revision: https://developer.blender.org/D11958

Fix T89868: Crash showing thumbnail of wide-aspect image

Scaling down images could create images with a width or height of zero.

Clamp at 1 to prevent a crash, also add an assert to scaling functions.

Ref D11956

Cleanup: Simplify realizing of pointcloud instances

Just a small change to make the function slightly shorter.

Speed up Delaunay raycast.

From Erik Abrahamsson, this uses parallel loops for raycasting.
It speeds up one example with many crossings of a bezier curve,
from 0.68s to 0.28s.

Greatly improve speed of Delaunay when have a lot of holes.

Using part of a patch from Erik Abrahamsson, this replaces the
use of linked lists for original id tracking by Sets.
I had thought that the lists were unlikely to grow to more than
a few elements, but when the mesh has a lot of holes (whose
original ids go *outside* the hole, and therefore, most of the
mesh), this assumption can be very wrong.
On a Text regression test, the time went from 11.67s to 0.16s
with this fix. I also tested to make sure that Boolean didn't
slow down with this, and found it actually had a very slight speedup.

Using Sets exposed a dependency on the ordering of the items
in the id lists, luckily caught by a mesh intersect regression test,
so fixed that.

Cleanup: Simplify logic, use C++ types

Also remove an unecessary null check, and make inner loop simpler.

Fix T89624: Vertex painting causes mesh to flicker

The `ibo.lines_paint_mask` extractor doesn't have a callback to iterate
bmesh faces, this made `filter_into` ignore the extractor.

Fix T89722: Duplicate macro can cause strips to overlap

Bug caused by 78693d524c13 accidentally removing overlap handling when
transform operator is canceled.

Reviewed By: campbellbarton

Differential Revision: https://developer.blender.org/D11899

Fix: Incorrect logic in spline lookup function

This section of code deals with evaluated points,
so that is the size it should use.